UNCLASSIFIED U S Department of State Case No F-2009-07012 Doc No C17584768 Date 09 28 2017 E1 SECRET PAGE 01 MOSCOW 08918 102105Z RELEASED IN PART B1 B7 E 1 4 D 60 ACTION NODS-00 INFO OCT-01 ISO-00 001 W 003186 R 261552Z JUN 75 ZFF-4 FM AMEMBASSY MOSCOW Classification Extended on 4 30 2003 Class SECRET Authority DSCG 11-1 50x6 TO SECSTATE WASHDC 1634 -_D_e_c_la_s_s_ify o_n_ 9_ _3_0 _2_05_0_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ SECRET MOSCOW 8918 NODIS DECAPTIONED STATE FOR EUR SOV ARMITAGE A SY DIKEOS E O 11652 XGDS-3 TAGS SUBJ MICROWAVE RFI DETECTED AT AMEMBASSY MOSCOW 1 IN THE EARLY SIXTIES A MICROWAVE SIGNAL ------- WAS DETECTED AT AMEMBASSY MOSCOW SUBSEQUENT INVESTIGATION REVEALED THAT THE SIGNAL TUMS TECHNICALLY UNIDENTIFIED MOSCOW SIGNAL APPARENTLY ORIGINATED OF THE EMBASSY YEARS UE' INVESTIGATION E'OLLOWED IN AN EE'E'ORT TO DETERMINE THE TRUE PURPOSE OF THIS SIGNAL I I I I 3 THE MOST RECENT SOVIET JAMMING ATTEMPT MUTS WAS FIRST SECRET SECRET PAGE 02 MOSCOW 08918 102105Z REVIEW AUTHORITY Frank Perez Senior Reviewer UNCLASSIFIED U S Department of State Case No F-2009-07012 Doc No C17584768 Date 09 28 2017 1 4 0 B1 B7 E UNCLASSIFIED U S Department of State Case No F-2009-07012 Doc No C17584768 Date 09 28 2017 1 4 0 B1 B7 E I _A_VE_RA_G_E_D_S_E_VE_RA __ L_H_O_U_R_S_D_A_I_L_Y__- - - - I SINCE THEN' MUTS HAS 5 IN ADDITION TO THE RADIO FREQUENCY JAMMING CAUSED BY TUMS THE POSSIBILITY OF TUMS CREATING A HEALTH HAZARD HAS ALSO BEEN INVESTIGATED THE RESULTS OF OUR INVESTIGATIONS IN 1967 PROJECT PANDORA HAVE BEEN NEGATIVE IN THAT THE TUMS POWER LEVEL IS WELL BELOW CURRENT U S SAFETY STANDARDS RECENT ROUGH CHECKS OF MUTS POWER LEVELS INDICATE AN EXTREMELY LOW LEVEL ALSO 6 PLANS CALLED FOR THE ARRIVAL DURING THE MONTH OF AUGUST OF A PHYSIOLOGIST RADIATION EXPERT TO CONTINUE INVESTIGATION OF THE MOSCOW TUMS SIGNAL THE APPEARANCE OF THE MUTS SIGNAL AND NEED FOR MORE PRECISE DATA I I I ADDITIONAL MEASUREMENT EQUIPMENT HAS ALSO BEEN ORDERED I 7 IF MEASUREMENT OF THE MUTS SIGNAL SHOWS THE POWER LEVEL TO BE ABOVE SOVIET SAFETY STANDARDS WHICH ARE LOWER THAN U S STANDARDS A PROTEST TO THE SOVIETS SHOULD BE CONSIDERED AT SECRETARY-DOBRYNIN OR AMBASSADOR-GROMYKO LEVEL WE RECALL THAT PROTESTS WERE MADE IN PAST YEARS RE TUMS AND THAT SOVIETS GROMYKO IN ONE INSTANCE COUNTERED THAT MORE INTENSIVE SIGNALS WERE DIRECTOED AGAINST SOVIET EMBASSY IN WASHINGTON SUGGEST THAT IT WOULD BE ADVISABLE TO CHECK ON THIS SITUATION WHICH WOULD BE FACTOR IN ANY RECOMMENDATION CONCERNING A PROTEST WHICH MAY BE INDICATED STOESSEL SECRET NNN UNCLASSIFIED U S Department of State Case No F-2009-07012 Doc No C17584768 Date 09 28 2017